Joystick



FIG. 1 is a top plan view of a joystick showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a left side elevation thereof;

FIG. 5 is a rear elevation thereof; and

FIG. 6 is a right side elevation thereof.

The ornamental design for a joystick, as shown and described.